Conversion by Curmudgeon

Unclued
lights give the name of a creator, what he did, and the current
location of his work. Wordplay in across clues yields the answer and an
extra letter that is not entered in the grid; these letters indicate
how clashes should be resolved. Solvers should highlight the creation
if they send their entry as an image, or give its name if they send
their entry as a list.

Down
2 Enough said for Bard in inquiry
about Globe's closure (5)
3 This metal compound beginning to
end as monetary unit (4)
4 Tommy's to leave show in need of
leader of band (5)
5 Sham electronic cypher (4)
7 A brief situation involving
strain in the north, having a medical disorder (7)
8 Eavesdropping devices raised
dispute (4)
9 Regular sensation with leader of
cavalry's sword (5)
10 Language family taking into
account Latin and Tai (6)
11 Kaiser's new manoevres
capturing Luxembourg, showing this? (11)
13 Alloys with oxygen for advanced
photographic developers (6)
16 One French thing complete in
itself - not a little unsound (11)
18 Confused Oriental, with no
finicky hesitation becomes member of US minority (6)
21 Alternate energy buries old
anger (5)
22 In chaotic sequel iced salts,
for example, become liquid (10)
23 Conceptual notion with latitude
(5)
24 Herald's white Arabian noble (6)
29 Convoluted apron in hard gravel
layer (7)
30 Such blunders with time become
extreme causes of alarm (6)
32 Person from the Orient hugging
coloured inhabitant of torrid zone (6)
34 Silver as centre of oribi's
pattern of fur (5)
36 A ship's storage area in a
state of maintenance (5)
37 Admit it is missing from
inflammation of the gut (5)
39 Dodgy gear shifting masses of
sand (4)
41 Arrange in a specified way to
alter ship's course (4)
42 Dairy not unknown to turn up in
traditional dwelling (4)

To
enter this
competition, send your entry as an
image or in list format, indicating the highlighted creation, to
quiz.man@ntlworld.com before the 8th December
2012. The first correct entry drawn from the hat will receive a copy
of one of the Chambers range of books
which has been donated
by Chambers.